Invention Grant
- Patent Title: Ceramic laminated device and method for manufacturing same
- Patent Title (中): 陶瓷层压装置及其制造方法
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Application No.: US12161901Application Date: 2007-03-06
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Publication No.: US07826196B2Publication Date: 2010-11-02
- Inventor: Ryuichi Saito , Koichi Shigeno , Hiroshi Kagata
- Applicant: Ryuichi Saito , Koichi Shigeno , Hiroshi Kagata
- Applicant Address: JP Osaka
- Assignee: Panasonic Corporation
- Current Assignee: Panasonic Corporation
- Current Assignee Address: JP Osaka
- Agency: McDermott Will & Emery LLP
- Priority: JP2006-070599 20060315
- International Application: PCT/JP2007/054281 WO 20070306
- International Announcement: WO2007/119312 WO 20071025
- Main IPC: H01G4/06
- IPC: H01G4/06 ; H01G4/005

Abstract:
The present invention relates to a ceramic laminated device including a dielectric ceramic and an Ag electrode. In a dielectric ceramic that can be sintered at low temperatures and has a high dielectric constant and Q value, reactivity between the ceramic and Ag during sintering is suppressed low and segregation of specific elements in the proximity of the electrode is controlled. Thus, a filter having a high Q value and low loss is produced stably. For this purpose, in a ceramic laminated body including at least a ceramic and a Si-containing glass, a ratio of A/B, i.e. a ratio of a Si element concentration (A) within a range at a distance of 5 μm or smaller from the Ag electrode to a Si element concentration (B) within a range at a distance larger than 5 μm from the Ag electrode, is set equal to or smaller than 2.
Public/Granted literature
- US20090034157A1 CERAMIC LAMINATED DEVICE AND METHOD FOR MANUFACTURING SAME Public/Granted day:2009-02-05
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